diff --git a/tools/test/topos/sys-nonlinear-4.config b/tools/test/topos/sys-nonlinear-4.config
index b843146..b1451be 100644
--- a/tools/test/topos/sys-nonlinear-4.config
+++ b/tools/test/topos/sys-nonlinear-4.config
@@ -18,7 +18,7 @@
           [{switch,1,
                [{backend,linc_us4_oe},
                 {datapath_id,"00:00:ff:ff:ff:ff:ff:01"},
-                {controllers,[{"Switch0-Controller","10.1.8.147",6633,tcp}]},
+                {controllers,[{"Switch0-Controller","10.1.8.147",6653,tcp}]},
                 {controllers_listener,disabled},
                 {queues_status,disabled},
                 {ports,
@@ -28,7 +28,7 @@
            {switch,3,
                [{backend,linc_us4_oe},
                 {datapath_id,"00:00:ff:ff:ff:ff:ff:03"},
-                {controllers,[{"Switch0-Controller","10.1.8.147",6633,tcp}]},
+                {controllers,[{"Switch0-Controller","10.1.8.147",6653,tcp}]},
                 {controllers_listener,disabled},
                 {queues_status,disabled},
                 {ports,
@@ -37,7 +37,7 @@
            {switch,2,
                [{backend,linc_us4_oe},
                 {datapath_id,"00:00:ff:ff:ff:ff:ff:02"},
-                {controllers,[{"Switch0-Controller","10.1.8.147",6633,tcp}]},
+                {controllers,[{"Switch0-Controller","10.1.8.147",6653,tcp}]},
                 {controllers_listener,disabled},
                 {queues_status,disabled},
                 {ports,
@@ -47,7 +47,7 @@
            {switch,4,
               [{backend,linc_us4_oe},
                {datapath_id,"00:00:ff:ff:ff:ff:ff:04"},
-               {controllers,[{"Switch0-Controller","10.1.8.147",6633,tcp}]},
+               {controllers,[{"Switch0-Controller","10.1.8.147",6653,tcp}]},
                {controllers_listener,disabled},
                {queues_status,disabled},
                {ports,